Weir is a city located in Williamson County, Texas. Weir has a 2026 population of 803. Weir is currently growing at a rate of 2.16% annually and its population has increased by 14.06% since the most recent census, which recorded a population of 704 in 2020.
The median age in Weir is 37.8 years: 37.1 years for males, and 41.8 years for females. For every 100 females there are 99.1 males.
Data after 2023 is projected based on recent change
Overall: 37.8 years
Female: 41.8 years
Male: 37.1 years
There are 327 adults, (91 of whom are seniors) in Weir.
Female: 218 (50.2%)
Male: 216 (49.8%)
The racial composition of Weir includes 76.73% White, and smaller percentages for Black or African American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 333 | 76.73% |
| Two or more races | 93 | 21.43% |
| Black or African American | 8 | 1.84% |